With Reflecting Prism Patents (Class 359/207.8)
  • Patent number: 8848009
    Abstract: An optical scanning device scanning scan target surfaces in a first direction with light includes: a light source emitting first and second light beams corresponding to two of the scan target surfaces; an optical deflector including a reflection surface on which the emitted first and second light beams are obliquely incident while being separated from each other in a second direction perpendicular to the first direction, and deflecting the first and second light beams; a scanning lens disposed on respective optical paths of the deflected first and second light beams; and a branching optical element transmitting therethrough most of the first light beam transmitted through the scanning lens, and reflecting most of the second light beam transmitted through the scanning lens. The deflected first and second light beams intersect between the optical deflector and the branching optical element, when projected on a plane perpendicular to the first direction.
    Type: Grant
    Filed: September 21, 2012
    Date of Patent: September 30, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Naoto Watanabe, Toshiaki Tokita, Kohji Sakai, Nobuaki Kubo
  • Publication number: 20140071220
    Abstract: In accordance with an embodiment, an optical scanning apparatus for exposing a photoconductor includes a light source, a deflecting device, an imaging optical system and a light-guiding optical system. The light source configured to emit a light beam. The deflecting device configured to deflect and scan the light beam from the light source. The imaging optical system configured to form an image by using the deflected and scanned light beam on the photoconductor. The light-guiding optical system configured to guide the light beam passing through the imaging optical system to a photodetector.
    Type: Application
    Filed: June 7, 2013
    Publication date: March 13, 2014
    Inventor: Yasushi Kuribayashi
  • Publication number: 20130155166
    Abstract: An optical scanning apparatus includes a light source, an optical deflector having a rotary polygon mirror to deflect a light beam from the light source, a scanning optical system configured to focus the light beam deflected by the optical deflector on a target surface, a sync detecting sensor configured to determine a write start timing on the target surface, and a processing unit configured to correct detection data of the sync detecting sensor based on a measured value of a time needed for one revolution of the rotary polygon mirror.
    Type: Application
    Filed: December 18, 2012
    Publication date: June 20, 2013
    Inventors: Naoto WATANABE, Toshiaki TOKITA, Kohji SAKAI, Nobuaki KUBO, Masayuki MURANAKA
  • Patent number: 8392199
    Abstract: A clipping detection device calculates an amplitude distribution of an input signal for each predetermined period, calculates a deflection degree of the distribution on the basis of the calculated amplitude distribution, and then detects clipping of a communication signal on the basis of the calculated deflection degree of the distribution.
    Type: Grant
    Filed: May 21, 2009
    Date of Patent: March 5, 2013
    Assignee: Fujitsu Limited
    Inventors: Takeshi Otani, Masakiyo Tanaka, Yasuji Ota, Shusaku Ito
  • Publication number: 20130050792
    Abstract: A Z-axis focusing mechanism having a scanner and a prism whose front and rear faces are not normal to the direction of travel of a light beam prior to the light beam impinging upon the front face of the scanner. The scanner and the prism are oriented with respect to one another such that when a light beam is scanned onto the front face of the prism, a scanned beam having varying Z-axis focus points at distinct lateral locations exits the rear face of the scanner.
    Type: Application
    Filed: August 23, 2012
    Publication date: February 28, 2013
    Inventors: William I. Vogt, Michael J. Szulczewski
  • Patent number: 8274740
    Abstract: A beam splitter includes a first surface and a second surface. The first and second surfaces are linearly offset from one another along an axis. The first and second surfaces are positioned to receive an optical beam projected in a first direction that is generally perpendicular to the axis. The first surface is configured to redirect a first portion of the optical beam in a second direction that has a first rotational offset with respect to the first direction and a second rotational offset with respect to the axis. The second surface is configured to redirect a second portion of the optical beam in a third direction that has a third rotational offset with respect to the first direction and a fourth rotational offset with respect to the axis.
    Type: Grant
    Filed: April 21, 2009
    Date of Patent: September 25, 2012
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Kenneth Raymond Hotelling, Jerry E. Fox
  • Publication number: 20110286068
    Abstract: Briefly, in accordance with one or more embodiments, a scanned beam display comprises a light source to generate a light beam and a scanning platform to receive the light beam and to scan the light beam as a projected image. The scanned beam display further comprises first and second optics, wherein the first optic directs the light beam onto the scanning platform to be reflected through the second optic as the projected image. A reflective surface disposed on at least one of the first optic or the second optic reflect stray light away from the projected image.
    Type: Application
    Filed: May 21, 2010
    Publication date: November 24, 2011
    Applicant: MICROVISION, INC.
    Inventor: Joshua M. Hudman
  • Patent number: 7837332
    Abstract: Laser projection systems are provided comprising a laser source, scanning optics, beam splitting optics, and a scanning controller. According to one embodiment, the laser source is configured to produce at least two optical beams having different emission wavelength spectrums. The beam splitting optics are positioned downstream of the scanning optics and are configured to generate wavelength-dependent spatial misalignment of the two optical beams in the image plane by splitting the two optical beams into spatially misaligned propagating axes. According to another embodiment of the present invention, the beam splitting optics are positioned downstream of the scanning optics and are configured to generate polarization-dependent spatial misalignment of the two optical beams.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: November 23, 2010
    Assignee: Corning Incorporated
    Inventor: Jacques Gollier
  • Publication number: 20090237670
    Abstract: There is disclosed a prism for use in scanning applications such as total internal reflection microscopy in which the prism is translated relative to an incident light beam. A geometry is disclosed which cancels walk of the beam footprint at the base of the prism. Walk of the beam footprint due to irregularities in a largely planar sample surface located at the prism base are cancelled by coupling movement of the incident light beam to movement of the sample in the field of view of an objective lens, for example as part of an autofocus arrangement.
    Type: Application
    Filed: March 6, 2009
    Publication date: September 24, 2009
    Inventors: Mark Osborne, Jason Bryant, Bojan Obradovic, Harold Swerdlow